2016 Stanforth Kibo:

 Photos: [ below ] [ more when built ] 

Note April 16 2017: bike still being built up, so this is also an 'under construction' web page...

The general story: My ideas began as I thought about having a custom built frame made based on my beloved 1984 Trek 830. As described on the page about that, the geometry I find sort of 'magic', though nobody seemed to be making anything similar anymore. In my long book and web-researches into the minutiae of geometry, fork rake, chainstay length, etc. in order to see if I ought to change anything I finally came across this page on the Stanforth Kibo, and was amazed - not only was the geometry nearly the same as what I had come up with 'independently', but he was using the practical 1" threaded steerer and quill stem, and even the same Tange Levin headset as my 830 (and what I of course planned for the to-be-built bike).

It's not entirely coincidental of course; the Kibo was designed based largely on the 1985 Saracen Conquest bikes that the Cranes used on Kilimanjaro (here are some nice photos of the model, and here are some more with comments), the same brief 'golden age' of mountain bikes with this nice geometry - not the suuuuper long and suuuper shallow head angles of the early bikes, and before the steep angles, shorter chainstays, and eventually crazy slopes, suspension, etc. of later stuff.

Two things I should have thought of speccing on the build (but forgot or didn't want to seem like too much of a hassle) were 1) having the chainstay bridge drilled-through (it's threaded on the wheel side, which works well enough with plenty of wheel clearance, but having it drilled through would allow adjustable narrower fender clearance if desiredas described here), and 2) an under-the-crown fender mount. Because the 'daruma bolt' suppled with the fenders was a little short (as are the others available) to hang the fender low enough to match the back fender's 'lines', I had to solve the problem myself, as described here.

So here's the story, super specific technical details, & pictures (for my record and perhaps your information or ideas). In appreciation of the English content I've tried to use real English spelling & terms when I remembered. I'm having such a gas slowly putting this together and seeing my beautiful new green & silver friend emerge that I even like this 'blogging' about it too (and bloody hell - as I type this on April 17 it's snowing again)!


Specifications:

Frame: 2016 Stanforth Kibo, 22", stock geometry with a few extra braze-ons.
Built by noted English framebuilder Lee Cooper. Serial 010916 LC, which means 1st frame 9th month 2016, and Lee Cooper of course.
Materials: Reynolds 631 main tubes, 525 rear triangle. Top tube and down tube are .9/.6/.9mm, seat tube is .8/.55, seat stays .9, chain stays .9/.6. Fork blades 1/.6. Medium-point lugs, forged horizontal '1010 style' dropouts with adjusters (convenient for later trying a hub gear!) & fork ends, with double eyelets, F&R rack mounts, etc.
Geometry: Unmodified from standard (because already just right!): Seat Tube C-T 55.9cm & 72°, TT 57.8cm, HT 6.5cm & 70°, fork rake 5.5cm, chainstays 46.8cm, BB drop 3cm, standover 81.7cm (I measure about 82.7 with the tyres used).
Frame extras I specified include chain hanger, pump peg, extra barrel mounts under top tube & behind seat tube, kickstand plate, and no rear brake cable hanger (so I can use a QR on binder bolt). (The Lawyer Lips they were compelled to have were filed flat by me of course!)
Colour: British Racing Green powdercoat.

Chainset: Sugino Aero Tour (used). New chainrings: 26 (Sugino stainless), 36 (Sugino aluminium), 46 (Blackspire aluminium), Sugino Autex bolt (wait - can't find one in my stash, oh no!).
Derailleurs: Suntour XC Pro front & Shimano Deore RD-MT-650 rear (both NOS but ST camp on XC used - can't find any NOS in 1.125!).
Freewheel: Suntour Winner Pro 5sp. 13-17-21-26-32 (NOS, 1980s mfg.), with Wheels Mfg. 2mm spacer & Suntour chromed steel dork disk (NOS) (aka Fred Frisbee, spoke protector, pie plate, etc. and perhaps one of the most controversial and angrily 'debated' items in cycling for some reason, but sensible and looks good to me).
Here's a gear table - I do get a nice even spacing. I'm the type who rides the 36 chainwheel most of the time, shifts down to the 26 for hills, and 46 for long downhills, using the cogs for variation. 26-36-46 has become my standard last few builds - can't believe I was using like 28-38-50 or whatever 20 years ago! Anyway, none of that complicated multi-shift 'half step plus granny' gearing for me ("a theoretician's delight", says Tony Oliver in his book!). I also don't consult this chart often, nor do I have it taped to my top tube or stem. So here I've slandered St. Frank, and I've disobeyed St. Sheldon too, in my use of freewheels on new bikes (and 40-40 spoking) - plus this is gear inches and not gain ratios, and I spell derailleur properly! [thunder sounds]


26 38.5% 36 27.8% 46
13 51.5 71.3 91.1
30.8%
17 39.4 54.5 69.7
23.6%
21 31.9 44.1 56.4
23.8%
26 25.8 35.7 45.6
23.1%
32 20.9 29.0 37.0

Shift levers & cables: Suntour Bacon ratchet with Suntour Barcon wound stainless casings & braided cables (NOS).
Chain: Sram PC-870 (new) (had to add one extra link for proper fit, so another whole chain bought!).
Bottom bracket: Tange LN-3922 sealed, 68x127 (new).
Pedals: MKS BM-7 (the reintroduced copy of the long-missed BMX-7 that were standard on several early mountain bikes), with MKS pedal flips and MKS deep half-clips (new).

Wheels: Velocity Atlas 26x25mm rims (special 40-hole batch!), Phil Wood FSA hubs, 3x with Wheelsmith stainless butted spokes: 256mm drive side rear, 258 front & non-drive rear (these US-made wheel parts all new of course), with Suntour QR skewers (NOS).
Built by famous Wisconsin wheelbuilder Earle Young, who says 'these wheels are the cockroaches of the rolling stock world, built to outlast all other species' (I likes me some 40/40 symmetry).
Tires: Schwalbe Marathon HS-404 26x47mm, Michelin C4 tubes, Velox rim tape of course.

Brakes: Dia-Compe 983 eccentric (NOS). (was going to use Tektro 720, but these nice 983s showed up, and I spent the $ on them instead; eventually I'll maybe use these on my 1983 Univega Gran Turismo if/when I swap to 700c from 27")
Brake levers: Suntour Superbe Pro with Modolo 919 'Anatomic' hoods (NOS both).
Brake cables:: Z-Milano (NOS ca. late 1980s mfg.)
Brake cable hangers: Quick release; Dia Compe front (new), Shimano rear (NOS) (more nearly extinct yet completely practical kit).
Brake straddle hanger:: Tektro 1246a, 'custom' black & silver (I wanted silver but could only get black, so sanded & polished the anodizing off of the front & back faces but was too lazy to do the more intricate edges and I think they look good!).

Headset: Tange Levin on threaded 1" steering tube (new).
Handlebars: Nitto RM-013-HT Dirt Drop Heat Treated (new).
Stem: Nitto Dirt Drop 80mm (a little used).
Grips: Grab-On Maxi, covered with Newbaum's cotton tape (4 rolls; brown).

Seat: Brooks "Flyer", brown (the 'springed B17'; installed new 2011 and lightly used on the Univega, swapped to a used Avocet Touring II on the Univega that I think was original on my 83 Cannondale ST500)!
Seat pillar: SR Laprade, 27.2mm (used).
Seatpost binder: Campagnolo QR (NOS) (not only is it cool - to me at least - but it's also long enough to use the cable hanger I like).

Rack: Jandd 'Standard' rear, unfinished silver (used). (may change later if touring for Jandd 'extreme' front, 'expedition' rear, that I special-ordered silver unfinished, but this standard looks nice and is plenty heavy-duty for non-touring use)
Water bottle cages: Minoura AB100-5.5, silver anodized, x3 (or x2 depending, because why have the bottom one on asking to bend if not on a long ride?) (new).
Bell: Lion Bellworks brass (made in England), mounted on stem extension (new).
Pump: Zefal HPX (any one of my several in use).
Mirror: Mirrycle original (not yet ... need a mirror but not about to tap & thread these nice NOS levers, so looking for another possibility).
Mudguards: Velo-Orange 650b x 58mm fluted aluminum (NOS; I bought them new/closeout in 2011) with Rivendell 'Sackville' mudflap in olive (new).
Kickstand: Pletscher/Esge, with foot (new).
Chainstay protector!: Stainless steel (NOS of course, as these are uninvented & extinct).

* * * *

Photos [interim until build finished]: - press for bigger picture; press big picture or backspace to get this index.

More bike stuff on my velo pages.

edition: 2017.04.17 | © robert liebermann
url: http://rjl.us/velo/kibo.htm
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frame out of box
Olympus TG-2 snapshot digicam, autozapped & resized for this page with Irfanview
© 2017 Robert Liebermann


wheels and bars on for fast look
Olympus TG-2 snapshot digicam, autozapped & resized for this page with Irfanview
© 2017 Robert Liebermann


BB view
Olympus TG-2 snapshot digicam, autozapped & resized for this page with Irfanview
© 2017 Robert Liebermann


the partially assembled kibo with its relative the 1984 Trek 830
Olympus TG-2 snapshot digicam, autozapped & resized for this page with Irfanview
© 2017 Robert Liebermann


Sugino AT &c. Canadian made Blackspire outer 46t. chainring - not sure if I think it looks ungraceful or nice.
Olympus TG-2 snapshot digicam, autozapped & resized for this page with Irfanview
© 2017 Robert Liebermann


transmission in part - note the chromed Suntour dork disk!
Olympus TG-2 snapshot digicam, autozapped & resized for this page with Irfanview
© 2017 Robert Liebermann


seat cluster
Olympus TG-2 snapshot digicam, autozapped & resized for this page with Irfanview
© 2017 Robert Liebermann


partially assembled...
Olympus TG-2 snapshot digicam, autozapped & resized for this page with Irfanview
© 2017 Robert Liebermann


Almost finished (and handlebar tape not trimmed)...
Olympus TG-2 snapshot digicam, autozapped & resized for this page with Irfanview
© 2017 Robert Liebermann


Almost finished (still no chain)...
Olympus TG-2 snapshot digicam, autozapped & resized for this page with Irfanview
© 2017 Robert Liebermann


Almost finished (looking pretty silvery, eh?)...
Olympus TG-2 snapshot digicam, autozapped & resized for this page with Irfanview
© 2017 Robert Liebermann


Almost finished (with Fran the Cat)...
Olympus TG-2 snapshot digicam, autozapped & resized for this page with Irfanview
© 2017 Robert Liebermann